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# app/controller/articles_controller.rb
around_filter { |controller, action|  controller.send(:add_published_scope, Article){ action.call } }

# app/controller/application_controller.rb
def add_published_scope(klass = nil, &block)
  unless klass
    klass = controller_name.classify.constantize
  end
  klass.with_scope(:find => klass.where("published_at <= ?", Time.zone.now)) do
    yield

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#!/usr/bin/env ruby
 
require 'rocketamf'
require 'stringio'
 
# Monkey patch for RocketAMF (0.2.1 gem) that handles IExrternalizable types
# in the input, storing their type as "__as3_type" parameter:
module RocketAMF
  module Values #:nodoc:
    class TypedHash

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#!/usr/bin/env ruby
 
require 'rocketamf'
require 'stringio'
 
# Monkey patch for RocketAMF (0.2.1 gem) that handles IExrternalizable types
# in the input, storing their type as "__as3_type" parameter:
module RocketAMF
  module Values #:nodoc:
    class TypedHash

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# encoding: UTF-8
require "nokogiri"
require "open-uri"

class Scraper
  class << self
    def build(path, target)
      parse get(path), target
    end

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#!/bin/bash
# 
# Super simple script to create a favicon.ico from specified png.
# Requires imagemagick ( http://www.imagemagick.org )
# 
# Usage:
# 	./favicon-from-png.sh myimage.png
#	ls
#	myimage.png favicon.ico
#

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#! usr/bin/env ruby
require 'chunky_png'

class ChunkyPNG::Image
  # s: Integer (pixel size)
  def pixelize s = 10
    temp = Array.new((height*1.0/s).ceil) {Array.new((width*1.0/s).ceil) {Array.new(3) {0}}}
    height.times {|j| width.times {|i| ChunkyPNG::Color.to_truecolor_bytes(get_pixel(i,j)).each.with_index {|e,k| temp[j/s][i/s][k] += e}}}
    png = ChunkyPNG::Image.new width, height
    sq = s**2

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#!/usr/bin/env ruby
# Usage: gemspec [-s] GEMNAME
#
# Prints a basic gemspec for GEMNAME based on your git-config info.
# If -s is passed, saves it as a GEMNAME.gemspec in the current
# directory. Otherwise prints to standard output.
#
# Once you check this gemspec into your project, releasing a new gem
# is dead simple:
#

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#!/usr/bin/env ruby

# Put this file in the root of your Rails project,
# then run it to output the SQL needed to change all
# your tables and columns to the same character set 
# and collation.
#
# > ruby character_set_and_collation.rb

DATABASE      = ''

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Gathering.js - How to use

Keep list (and count) of online users in a Firebase web app - by isolated rooms or globally.

Live Demo

Firebase Shared Checklist is a demo application that shows the number of users joined a checklist using gathering.js. Here is a 1 minute screencast of using this application.

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<dom-module id="fruit-component">
	<template>
		<p>color: {{color}}</p>

		<button on-tap="setColor">set color in light dom</button>

	</template>
	<script>
		Polymer({
			is: 'fruit-component',